Beschreibung
The worldwide bestseller – updated inside and out
Mikael Krogerus is an editor at Das Magazin, the cultural supplement of four of Switzerland’s leading newspapers. Roman Tschäppeler is the founder and CEO of guzo, a communication agency based in Biel, Switzerland. Together, they are the authors of an internationally bestselling series of smart-thinking books, including The Decision Book, The Change Book and The Test Book.